Storyteller Clip Preload Handle
A handle for managing the preloading of clip playcard images.
This handle is returned by Storyteller.preloadClips and allows the caller to cancel ongoing preloads when they are no longer needed.
Important: You must retain a strong reference to this handle while preloading is in progress. If the handle is garbage collected, preloading will be stopped automatically. Store the handle in a ViewModel, Activity, or Fragment field to keep it alive.